Current through September 18, 2024
Authority: IC
13-14-8; IC
13-15-1-2;
IC
13-15-2-1;
IC
13-18-3-1; IC
13-18-4-1
Affected: IC
13-11-2; IC
13-13-5-1;
IC 13-18-2; IC 22-12
Sec. 14.
(a) A
hydropneumatic storage tank shall conform with the following:
(1) The requirements of IC 22-12 and 680
IAC.
(2) Shall not be buried except
when in accordance with subdivisions (3) and (4).
(3) A tank shall be protected from freezing
and flooding.
(4) Provide housing
as follows:
(A) A hydropneumatic storage tank
with an air-water diaphragm separator shall be within the housing.
(B) Hydropneumatic storage tanks without an
air-water separator shall have all nontank mechanical parts, including valves,
piping, and components, within the housing.
(5) Be equipped to provide the following:
(A) The ability to isolate the tank from the
rest of the public water system.
(B) A drain.
(C) Control equipment consisting of the
following:
(i) A pressure gauge.
(ii) Pressure relief valve.
(iii) Air addition as follows:
(AA) Manual air addition may suffice for a
hydropneumatic storage tank with an air-water diaphragm separator.
(BB) Equipment for automatic air addition
shall be required for all other hydropneumatic storage tanks.
(iv) Start and stop
controls for the pumps.
(b) The usable capacity of a hydropneumatic
storage tank must meet one (1) of the following:
(1) Be a minimum of three (3) times the
installed rated capacity, in gallons per minute, of the primary pump, or pumps
if more than one (1) pump is used to meet peak system demand, at an operating
pressure of at least thirty-five (35) pounds per square inch.
(2) Be based on the manufacturer's pump
specifications.
(3) Meet an
alternative criteria approved by the commissioner.
(c) Unless required by IC 22-12 or 680 IAC to
be certified by ASME, a hydropneumatic storage tank shall be certified by
American National Standards Institute (ANSI), The American Society of
Mechanical Engineers (ASME), National Sanitation Foundation (NSF
International), or Underwriter's Laboratories, Inc. (UL). The applicant must
submit information showing that the tank used is properly certified.
(d) Hydropneumatic tank storage of water
shall not be designated for fire protection purposes.
(e) A hydropneumatic tank shall not be used
in a community public water system when more than four hundred (400) persons
are served.
(f) If more than one
(1) hydropneumatic tank is used in series, each tank must:
(1) be able to be hydraulically isolated from
the others using valves or similar devices;
(2) have sampling taps for performing water
quality sampling; and
(3) be
operated and maintained to ensure adequate water turnover.
